BUS 302L STATS STUDY GUIDE WITH COMPLETE SOLUTIONS
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Course
BUS 302L
Institution
BUS 302L
BUS 302L STATS STUDY GUIDE WITH
COMPLETE SOLUTIONS
When computing the variance of a sample, the sum of the squared deviations, E is divided by -
Answer-n-1
"Not equal to" rejection regions consists - Answer-2 regions; left/right tail
If the correlation coefficient = 1 - Answer-standard ERROR E...
Reasons to calculate the mean data set - Answer✔✔-find measure of location
Normal distribution doesn't have a mean of - Answer✔✔-0
P value is > a you - Answer✔✔-reject the null
Do NOT use mean if - Answer✔✔-the number of observations is small or with extreme values
Mean - Answer✔✔-Half of the observations in a data set are greater
Median - Answer✔✔-middle value
*extreme values OK
Mode - Answer✔✔-most frequent value
Measures of Central Location - Answer✔✔-mean, median, mode
if probability distribution SYMMETRIC - Answer✔✔-m = m = m
*bell shaped, normal distribution
if distribution positively skewed to RIGHT - Answer✔✔-m > m > m
if distribution negatively skewed to LEFT - Answer✔✔-m < m < m
Measures of Variability - Answer✔✔-How much spread of data
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